document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=911754>Question 911754</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A trust fund has invested $8000 at 6% annual interest. How much additional money should be invested at 8.5% to obtain a return of 8% on the total amount invested? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #553344 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=553344\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We know 3 rates and one amount invested.<BR>\n" );
document.write( "0.06*8000+0.085*x=0.08*(8000+x)<BR>\n" );
document.write( "Multiply out.<BR>\n" );
document.write( "480+0.085*x=640+0.08*x<BR>\n" );
document.write( "Combine like terms.<BR>\n" );
document.write( "0.005*x=160<BR>\n" );
document.write( "Isolate x.<BR>\n" );
document.write( "x=160/0.005<BR>\n" );
document.write( "Divide.<BR>\n" );
document.write( "x=32000.0<BR>\n" );
document.write( "Check.<BR>\n" );
document.write( "0.06*8000+0.085(x)=0.08*(8000+x)<BR>\n" );
document.write( "480+0.085*32000.0=0.08*(8000+32000.0)<BR>\n" );
document.write( "480+2720.0=0.08*(40000.0)<BR>\n" );
document.write( "3200.0=3200.0<BR>\n" );
document.write( "Ok<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );